Crankcases & Parts

Upgrade the breather in your Evo with some modern technology. Fits: 1993-1999 Evolution Big Twin Style Engine New-style breather is not dependent on the rotation of the crankshaft to make it open and close. Instead, reeds open when pressure in the...

Replace your stock lower end with an S&S Short block. Black finish. Fits: 1984-1991 Evolution Big Twin Short Blocks combine a high-performance S&S Super Stock engine case assembly with installed 4.25" stroke S&S flywheels and connecting rods...

Replace your stock lower end with an S&S Short block. Fits: 1984-1991 Evolution Big Twin Short Blocks combine a high-performance S&S Super Stock engine case assembly with installed 4.25" stroke S&S flywheels and connecting rods EFI...

Shipped assembled. Fits: FL 1941-1947 74" Short block is shipped fully assembled. Unit features Replica crankcases, Sifton oil and breather assembly, stock stroke flywheel, Timken bearings, stock cam properly installed with a matched pinion and cam gear...